Quote:
Originally Posted by J-Mech
Although this is a text book description of how a voltage regulator works.... You really didn't answer the question. 
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If you want to address a problem only on a Yes / No basis, the IH service manual does a great job of keeping it at a simple level.
I believe the simplest universal test is remove the field wire - does overcharging stop - yes , then replace the regulator.
But we already did that.
No need to replace the SG because it is capable of overcharging the battery - that just confirms it is good operating condition.
Owner says the wiring is good.
That's as far as I can go on a Yes and No level.